Responsive Product Card using Flexbox and pure CSS

What are you most proud of, and what would you do differently next time?

Managed to get an acceptable responsive solution, and the end result looks good

What challenges did you encounter, and how did you overcome them?

Deciding which breakpoint limits to use

What specific areas of your project would you like help with?

Any advices or suggestions to reach the same solutions in a better or easier way, also to make the code as industry standard as possible.